dateFormat converts the textual representation of the datetime into the specified format or returns it as a Go time.Time type value. These are formatted with the layout string.
{{ dateFormat "Monday, Jan 2, 2006" "2015-01-21" }} → "Wednesday, Jan 21, 2015"
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As of v0.19 of Hugo, the dateFormat function is not supported as part of Hugo's multilingual feature.
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See the Format function for a more complete list of date formatting options in your templates.